let user = {
	show() {
	return this.name;
	}
};
  let hd2= { name: "后盾人2" };
hd2.__proto__ = user;
// Object.setPrototypeOf(hd2, user);
console.log(hd2.show());
console.log(hd2.__proto__ == user);
console.log(hd2.__proto__);
